A high-order group velocity locked vector soliton laser and its production method

Abstract

The invention discloses a higher-order group-velocity locked vector soliton laser and generating method and belongs to the laser field. According to the higher-order group-velocity locked vector soliton laser of the invention, a pump source, a wavelength division multiplexer, an erbium-doped optical fiber, a polarization maintaining optical fiber, an optical fiber coupler, an optical circulator and a polarization controller I are connected with one another sequentially through a single-mode passive optical fiber, so that an optical fiber ring-shaped cavity can be formed; one end of the optical circulator is connected with a semiconductor saturable absorption mirror; the semiconductor saturable absorption mirror is coupled into the optical fiber ring-shaped cavity, so that an optical fiber compatible device can be formed; the output end of the optical fiber coupler is connected with a polarization controller II and a polarization beam splitter sequentially through a single-mode passive optical fiber; the pump source injects pump light to the optical fiber ring-shaped cavity through a pump light input port of the wavelength division multiplexer; the output end of the optical fiber coupler outputs generated base-order group velocity locked vector solitons; and the polarization controller II and the polarization beam splitter are combined with each other so as to convert the base-order group velocity locked vector solitons to higher-order group velocity locked vector soliton laser pulse output.

Description

technical field [0001] The invention relates to a laser, in particular to a high-order group velocity locked vector soliton laser and a production method. Background technique [0002] A vector soliton refers to a soliton that has multiple soliton components and each soliton component is coupled together and propagates in the medium at the same group velocity. Single-mode fibers usually have weak birefringence, resulting in two orthogonal polarization directions in the fiber, making it possible to generate vector solitons in single-mode fibers. Curtis R Menyuks first predicted the existence of vector solitons in optical fibers ([1] C. R. Menyuk, "Stability of solitons in birefringent optical fibers. I: Equal propagation amplitudes," Opt. Lett. 12, 614-616 (1987)). Subsequent studies have shown that various types of vector solitons can be generated in the fiber according to the size of the fiber birefringence, such as phase-locked vector solitons, polarization-locked vector ...

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Problems solved by technology

[0005] In order to solve the problem that the high-order group velocity locked vector soliton has not yet been produced, the present invention provides a high-order group velocity locked vector soliton laser and a method for generating the high-order group velocity locked vector soliton, so as to realize the high-order group velocity locked vector soliton optical pulse output

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